______ keyword is used to find the number of values in a column.





Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The _______ is a set of programs to use and / or modify this data.
  2. Which of the following statement on the view concept in SQL is invalid?
  3. DROP is a statement in SQL.
  4. A top-to-bottom relationship among the items in a database is established by a
  5. If a transaction T has obtained an exclusive lock on item Q, then T can
  6. Union operator is a :
  7. Use of UNIQUE while defining an attribute of a table in SQL means that the attribute values are
  8. In an ER model,_____ is described in the database by storing its data.
  9. Immediate database modification technique uses
  10. It is an abstraction through which relationships are treated as higher level entities
  11. The relational model is based on the concept that data is organized and stored in two-dimensional tables…
  12. In multiple granularity of locks SIX lock is compatible with
  13. Manager salary details are hidden from the employee .This is
  14. ______defines the structure of a relation which consists of a fixed set of attribute-domain pairs.
  15. Dependency preservation is not guaranteed in
  16. A relation is in attribute of other composite key. if an attribute of a composite key is dependent on…
  17. For using a specific database …………… command is used.
  18. The metadata is created by the
  19. The middleware databases in which the business rules act are applicable to _______ tier architectures
  20. Key to represent relationship between tables is called
  21. Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
  22. Maximum height of a B+ tree of order m with n key values is
  23. _____ database is used to provide statistical information or summaries of values based on various criteria.
  24. The size of a data item is called its _______, which can be a field of some record or may be a larger…
  25. Data independence means
  26. operator is used to compare a value to a list of literals values that have been specified.
  27. Which of the following is not a characteristic of a relational database model?
  28. Data items grouped together for storage purposes are called a
  29. ______is a preferred method for enforcing data integrity
  30. The full form of GUI is _________